Spring-seat for agricultural machines.



A. L. ETHERINGTON.

SPRING SEAT FOR AGRIGULTURAL MACHINES. APPLICATION FILED JULY 18, 1912.

2 SHEETS-SHEET l.

Witnesses:

Patented Apr-[14, 1914.

I A. L, ETHBRINGI'ON. SPRING SEAT FOR AGRICULTURAL MACHINES.AYPLIOATIONIILED JULY 18, 1912.

} 1,093,M21 Patented Apr. 14, 1914.

2 SHEETS-SHEET 2.

Witnesses: Inventor Atkorneys ALFRED LORENZO ETHERINGTON, OF MILTON,NOVA SCO'IIA, CANADA.

SPRING-SEAT FOR AGRICULTURAL MACHII IES."

Specification of Letters Patent.

Patented Apr. 11, 1a141.

Application filed July 18, 1912. Serial No. 710,110.

To all whom it may concern Be it known that I, ALFRED LorenzoETHERINGTON, a subject of the King of Great Britain, residing at Milton,Province of Nova Scotia, Canada, have invented certain new and usefulImprovements in Spring-Seats for Agricultural Machines; and I do herebydeclare that the following is a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same.

The invention to, be hereinafter described relates to spring seats foragricultural machines.

In order to more clearly disclose the construction, operation, and useof the invention, reference should be had to the accompanying drawingsforming part of the pres ent application.

Throughout the several figures of the drawings like reference charactersdesignate the same parts.

In the drawings: Figure 1 is a top plan view of the invention; Fig. 2 isa front view of the same; and Fig. 3 is a vertical cross section on line33 of Fig. 1, looking in the direction of the arrows.

The main objects of the invention are to provide .a simple, efficient,economical, du-

' rable, and compact spring seat which will completely avoid all sideshocks and jars of the machine and, at the same time, one

which will automatically adapt itself to the.

cant or incline of the machine when working on a hill side.

Referring to the drawings in detail, 1 in dicates a skeleton frame inwhich the usual seat proper 2 is mounted. Extending from front to rearof this frame, along the longitudinal center thereof, is a bar 3 theopposite ends of which are turned up at rlght angles to form supportingarms or posts 4. In the upper ends of these arms is pivotally' suspendeda U shaped swinging bar 5 which is made fast to the bottom of the seat2. Thus, the seat is hung like a pendulum from the upper ends of arms 4,as will be clear on reference to Figs. 1 and 2. In order tosomewhatdeaden or retard the swing, so that the seat will not be unstable orliable to sudden and unexpected tilts, springs 6 have been provided.Preferably, these springs are arranged in pairs, one pair near the frontand one near the rear. The opposite ends of each spring of each pairare'connected, respectively, to the swinging bar 5, and to small platesor brackets 8 secured to the skeleton frame near. its opposite sides."

Springs 6 are tension springs and act in opposite directions. Theirtendency is, therefore, to maintain the seat in the positionsubstantially parallel with the skeleton frame 1, as clearly shown inFigs; 2 and 3. They will yield to one side or the other under the weightof the driver, as the ma chine cants on a hill side. They also act asshock absorbers, during the operation of the machine. The usual sidejars and shocks are imparted first to the skeleton frame 1 and, throughthe springs 6 and pendulum connection are completely deadened orabsorbed. The result is an easy riding and non-vibrating seat.

Though side swinging of the seat is desirable, it is equally desirableto limit the amount of the side swing within a reasonable range. Forthis purpose, stop plates '13 have been provided. These plates aresecured to. the plate 5 and extend a considerable distance to eitherside of the center of the seat. Their ends are turned down as at 14: toform ofl' sets which will engage the edges of the supporting bar 3 asthe machine is canted to one side or the other, beyond a predeterminedpoint, thus limiting the rela tive swinging movement between the seat 2and skeleton'frame 1.

Instead of mounting the skeleton frame 1 directly on the frame work ofthe machine, a supplemental H frame 9 is used. This H frame is solidlysecured to the machine frame and is provided with perforations or holesin the free ends of the side bars. These perforations are adapted toslidably receive; pins 10 projecting from the skeleton frameand providedwith enlarged heads 11 adapted to engage the under part of the H frameand limit the upward movement thereof. Coiled about each pin andarranged between the supplemental H frame 9 and the skeleton frame 1 isa cushion spring 12 adapted to absorb all vertical shocks.

It is thought that the operation and use of the invention will be clearfrom the preceding detailed description.

' Changes may be made in the construction, arrangement, and dispositionof the several parts of the invention without in any Way departing fromthe field and scope of the same, and it is meant to include all suchwithin this application wherein only the preferred form has beendisclosed.

Having this fully described -my invention, what I claim as new anddesire to secure by Letters Patent is:

A fixed frame, in combination with a bar pivotally suspended therein forlateral oscil- 7 lation, a seat mounted on saidbar and pairs ofhorizontalretarding springs arranged on each side of the front and rearof said seat and attached at their inner ends to said piv- Qted bar andat their outer ends to said frame, the pivots of said bar supporting theweight of the seat and thereby relieving the 15 said springs therefrom.In witness whereofI have hereunto set my hand in the presence ofWitnesses.

ALFRED LORENZO ETHERINGTON.

Witnesses:

JOHN GEORGE Pm,

CHARLES WARMAN, GEO. M. ANDERSON.

